Machine for jointing and grinding saws and other cutters.



.E. C. OATLEY. MAGHINE POR JOINTING AND GRINDING sAWs AND OTHER GUTTERS.APPLICATION FILED MAR. 15, 1912.

1,117,595. Patented Nov.1?,1914.

TE SATES ATENT UFFICE.

ELLZEY C. OA'TLEY, 0F STEVENS POINT, VVISCONSI.

MACHINE FOR JOINTING AND GRINDING- SAWS AND OTHER CUTTERS.

To all whom t may concern Be it known that I, ELLZur C. OA'rLEY, acitizen of the United States, residing at Stevens Point, in the countyof Portage and State of Visconsin, have invented certain ,new and usefulImprovements in Machines for Jointing and Grinding Saws and otherCutters, and do hereby declare that the following is a full, clear, andexact description of the same, reference being had to the annexeddrawings, making `a part of this specification, and to the letters andfigures of reference marked thereon.

The object of my invention is to provide a machine of simple or compactconstruction adapted to joint and sharpen the various cutting tools,such as saws and dado cutters used in wood and metal working machines,and thus supply a lack, which, in my eX perience I have learned exists,and to this end my invention consists in the machine constructedsubstantially as hereinafter specified and claimed.

In the accompanying drawings- Figure 1 is a perspective View of amachine embodying my invention; Fig. 2 is a bottom View of said machine;Fig. 3 is a cross section on the line 3-3 of F ig. 1; Fig. l is a detailView in section of a work holder for grinding cutters requiring an anglenot attainable by the work holder shown in the other figures; and Fig. 5is a detail view in section of a work holder for smaller cutters, orsaws than that shown in Fig. 1.

In the embodiment of my invention illustrated in the drawings, I employa base or table 10, which is adapted to be set on a work bench, whichnear one end has a post or standard 11 having bearings for a horizontalarbor or mandrel 12 that is provided intermediate its end with a pulley13 adapted to be belted to some conveniently located driving shaft. Neareach end the arbor is provided with a clamp 14 for the attachment of anemery, or grinding wheel, and provision is made to support the work tobe operated on so that each grindmg wheel may act on the work, the twowork holders being of different constructions and capabilities by reasonof varying kinds of saws or cutters to be operated on, and these willbe, respectively, described in detail.

Projecting from the post or standard 11, a short distance below thearbor, is a horizontal hollow boss 15 in which is rotatably and slidablymounted an arm 16 having at its Specification of Letters Patent.

Application filed March 15 1912.

outer end a boss perforated at right angles to the length of the arm .inwhich is rotatably and slidably mounted a similar' arm 17 having a bossperforated at right angles to its length to receive the stein 18 of arest or table 19, which stem rotatably and longitudinally movable insaid boss. Set screws Q0 are respectively provided to clamp the rods undstein at any desired adjustment, either loi'igit'udinally or rotatably,and it will. be seen that the work table or rest may thus be set at anydesired angle to hold the work thereon in such position, with referenceto the eniery wheel, as may be called for by the shape or configurationof the cutter or tool to be ground. By reason of its universaladjustability, the table or rest 19 adapts the machine for use withdiferent sorts of tool grinding done in a wood and metal working plant.

On the side of the support or` post opposite that on which the table orrest is supported, and upon the upper side of the base 10 is a carriage200 that is movable back and forth, at right angles to the longitudinalaxis of the emery wheel arbor, and is held in place and guided in itsmovement by a pair of parallel beveled or undercut tracks or guides 21,which are engagedby adjustable gibs, and for traversing said carriageback and forth, a feed screw 22, of well known construction and action,is provided. The carriage 200 has upon its upper side extending at rightangles to its path of travel a pair of round rods which form guides ortracks for a supplemental carriage 23 which has on its underside a halfnut 211 engaged by a feed screw of usual construction, by means of whichsaid supplemental carriage is travers-able toward and from the nearwheel on the arbor or .mandrel 12. The half nut, by the action of alever 26, is movable into and out `of engagement with the feed screw sothat when a quick traierse of the supplemental carriage is desired, itis necessary merely to disengage the half nut from the screw and slidesaid carriage along to the desired position when the half nut isrengaged with the feed screw. i

Mounted upon the upper side of the supplemental carriage is a block 27with its upper or outer end hollowed or chambered giving it a cup formand passingoutward therefrom at the center of the cup is a screw 28 uponwhich is mounted a conical or tapering form clamping washer Q9 which bythe action of a nut 30 is movable toward the cup so that a saw or cutterplaced between the cup and the clamping washer may be firmly held inposition for grinding'. rlhe cup and tapering form or clamp is used sothat saws with eyes oi greatly varying diameter may be held by the sameclamp. A jam nut 3l is provided on the screw 2S in those cases where itis desirable to lock the adjusting nut. The work holder shown in Fig. 4:is for use with cutters that require a diiierent angle for grinding thancan be obtained by the work holder shown in the other figures of thedrawings. In the case of the work holder shown in Fig. et, the screw 28rises from a ball 280 having a spherical bearing in the supplementalcarriage 23 s'o that a ball and socket joint is afforded enabling a widevariety of angles for the cutter clamped between the clamp 270 and thering or washer 29 at its upper end7 the clamp 270 has an annular seat271 for a rest to be used with small cutters. A binding screw 272 isprovided to impinge upon the exterior of the ball and thereby lock thesame in any desired angle ot adjustment. The ball is retained in itsseat by a ring 281. For clamping smaller saws the smaller clamp shown in-Fig. may be substituted for the one shown in Fig. l. Said Smaller clampinstead of being applied concentrically ot' the block 97 is supportedeccentrically therein by a plate 273 secured to the top of the block 27in the place oc cupied by the ring or washer 297 shown in Fig. l, whichwith the elements of the larger clamp is removed. By reference to Fig.4:, it will be seen that the smaller eccentrically supported clamp hasthe same construction as the larger clamp shown in Fig. l.

The saw or tool mounted on the supplemental carriage may require eithera horizontal position or a vert-ical position or some inclined positionto be properly acted upon by the emery wheel. To provide for this l formthe surface of the supplemental carriage and the block 27 in contact onthe curve of a cylinder so that the block may be rocked from a verticalto a horizontal position or at any desired angle, and to clamp it in thedesired. position a clamping screw is provided that passes through acurvilinear slot in a tiange 33 projecting laterally from the block andinto the supplemental carriage.

The base or bed l() is made of two meinbers that are hinged or pivotedtogether by a vertical pivot 3a situated at such point that the portionthereof supporting the supplemental carriage Q3 may be swung throughsubstantially 90 degrees so that the carriage will stand with the lineof travel of the carriage parallel with the axis of the emery wheel, orat right angles thereto, in which last named position it is possible togum large saws and dado saws while in the work holder.

it will thus be seen that in each oi' the two positions to which thework holder may be swung by reason of the two part base hinged by thepivot 34, the saw or tool is in working relation to the emery wheei,work of one kind, grinding, for example, being performed when the saw isin one position, and work of another kind, gumming, for eX- ample, beingpertormed when the saw, by change of the position of the work holder, isplaced in the other position. This is due to the tact that the pivot 34is located so that its axis is at or near the emery wheel so that theemery wheel is at or near the center about which the work holder swings.

The carriage-supporting member of the bed has a quadrant shaped arm 35which passes beneath aportion of the other member ot' the bed, and abolt 36 passing through the slot is provided to firmly secure the twobed parts in the desired relative position. ln connection with theswinging movement thus provided for the carriage, l find it useful tojoint or hinge the work holder so that it may swing laterally at rightangles to the direction oi travel ot' the supplemental carriage 23, apivotal connection 37 being provided between the downwardly extendingshank or stem of the work holder and the supplemental carriage 23. Itwill thus be seen that can grind the tool on any bevel.

Having thus described my invention what I claim is- The combination of abase composed of two sections pivotally connected together, a grindingwheel carrying arbor mounted upon one of said sections, a work holdermounted on the other section, said work holder being shiftable by themovement ot' the section which carries it from a working position inline with the axis of the grinding wheel arbor to a working position ina line that extends crosswise the axis ot said arbor whereby withoutremoval of the work from the work holder different kinds of operationsmay be performed on the work, an

arm having a slot curved concentrically with pivot of the two sectionsconnected with one et them and a clamp bolt passing through the slot. l

ln testimony whereoia i ailix my signature in presence of two witnesses.

ELLZEY C. OATLEY.

Tiilitnesses OTTO J. GoLDs'rniN, VILLIAM N. Cnnasnr.

Gopes of this patent maybe obtained for ive cents each, by addressingthe Commissioner of V"Patents, Washington, D. C.

